Studies of implementation of evidence-based supervision policies and procedures often report minimal to moderate adherence to evidence-based models. The few studies that exist examine the degree to which characteristics of probation officers, individuals on supervision, and supervision processes have an impact on rearrest (outcomes). Using administrative data on 7,326 probationers and surveys from 161 probation officers employed by five agencies, hierarchical linear models were used to identify the features of supervision processes that are most important to reduce recidivism. The findings clarify that no one evidence-based supervision feature (i.e., a validated risk and need assessment tool, case planning, treatment, compliance management, etc.) can achieve recidivism reductions. The best results can be achieved by using all features, although a risk-based case management approach that prioritizes employment and/or reducing the criminogenic needs creates similar outcomes. This article discusses the implications of prioritizing which supervision processes are used to impact positive supervision outcomes.